It's not pre diluted butt I did mix with water and the little test tube said its good and the thermostat is new but could be bad I guess but wouldn't that make it run hot all the time not just town and sitting or wheeling and as far as a clogged radiator it seems to drain properly when it was drianded and filled but is there a way to test the radiator to fond out

It's not pre diluted butt I did mix with water and the little test tube said its good and the thermostat is new but could be bad I guess but wouldn't that make it run hot all the time not just town and sitting or wheeling and as far as a clogged radiator it seems to drain properly when it was drianded and filled but is there a way to test the radiator to fond out

I'd say it's probably one of those two. Sounds like something is creating an obstruction, could very well be debris caught in the stat or a defective stat. You did say the defroster helps cool it down. That may not be attributed to the e-fan alone. I believe part of the coolant is routed through the heater core when you do that. Coolant that goes through the core doesn't go through the stat. That would make it more of a suspect... I don't see many others. Worth a try. You still have your fan shroud right?